GRAND RAPIDS, MI -- A man suspected of robbing a credit union on the Mercy Health Saint Mary's downtown campus was arrested Tuesday after a two-hour standoff with police at a Grand Rapids home.

The man, who authorities said is in his early 20s, allegedly passed a note to a teller at a Lake Michigan Credit Union, 260 Jefferson Ave. SE, that claimed he was armed and demanded cash about 3:20 p.m. Monday, Aug. 18. He left with an undisclosed amount of cash, and a weapon was not seen in the robbery. He apparently told the bank teller "I'm really sorry," police said.

Police on Tuesday linked the suspect to a house at 70 Grand Ave. NE and surrounded the residence about 6:45 p.m., Capt. Dan Savage said. The man came outside briefly, but then re-entered the home and refused to leave.

Nearby residents were given the option to evacuate as police blocked off Grand Avenue and nearby roads.

Two people at the Grand Avenue home safely evacuated. The suspect surrendered without incident shortly before 9 p.m.

The suspect's connection to the home was not immediately clear, Savage said. He was not armed at the time of the arrest.

Mercy Health Saint Mary's was not placed on lockdown following the Monday robbery. The credit union connects to the hospital through other buildings.

Angie Jackson covers public safety and breaking news for MLive/The Grand Rapids Press. Email her at ajackso3@mlive.com, and follow her on Twitter.